The latest gun massacre in America where 12 people were killed in Washington DC has another thing in common with the mass murder last December of 26 kids and teachers...violent computer games. To be more specific it was the life-like combat killing spree Call of Duty.

Gun deaths last year in the UK at 51 were down by 18 percent, yet private gun ownership continues to grow with 1.8 million legally held. Obviously there's no way of telling how many illegal guns are in circulation.